L1-norm error bounds for asymptotic expansions of multivariate scale mixtures and their applications to Hotelling's generalized

Y. Fujikoshi, V.V. Ulyanov and R. Shimizu

Journal of Multivariate Analysis, 2005, vol. 96, issue 1, 1-19

Abstract: This paper is concerned with the distribution of a multivariate scale mixture variate X=(X1,...,Xp)' with Xi=SiZi, where Z1,...,Zp are i.i.d. random variables, Si>0(i=1,...,p), and {S1,...,Sp} is independent of {Z1,...,Zp}. First we obtain L1-norm error bounds for an asymptotic expansion of the density function of X in the multivariate case as well as in the univariate case. Then the results are applied in obtaining error bounds for asymptotic expansions of the null distribution of Hotelling's generalized -statistic. The special features of our results are that our error bounds are given in explicit and computable forms. Further, their orders are the same as ones of the usual order estimates, and hence the paper provides a new proof for validity of the asymptotic expansions.

Keywords: Asymptotic; expansions; Error; bounds; Hotelling's; generalized; L1-norm; error; bound; Multivariate; scale; mixture (search for similar items in EconPapers)
Date: 2005
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Citations: View citations in EconPapers (4)

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